<script setup>
import {userRegisterService,userLoginService} from '@/api/user.js'
import { User, Lock } from '@element-plus/icons-vue'
//element图标库，使用前先使用pnpm安装
import { ref,watch } from 'vue'
import { useUserStore } from '@/stores/index'
import {useRouter} from 'vue-router'
//ref获取实例元素，下面一句
const form = ref()
const isRegister = ref(true)
const formModel=ref({
    username:'',
    password:'',
    repassword:''
})
const rules={
    username:[
        //非空校验,trigger是触发时机
        {required:true,message:'请输入用户名',trigger:'blur'},
        //长度校验
        {min:5,max:10,message:'用户名必须是5到10位的字符',trigger:'blur'}
    ],
    password:[
        {required:true,message:'请输入密码',trigger:'blur'},
        // \S为非空字符,正则校验
        {pattern:/^\S{6,15}$/,message:'密码必须是6-15位非空字符'}
    ],
    repassword:[
        {required:true,message:'请输入密码',trigger:'blur'},
        // \S为非空字符
        {pattern:/^\S{6,15}$/,message:'密码必须是6-15位非空字符'},
        {validator:(rule,value,callback)=>{
           //rule 当前校验规则相关信息
           //value 所校验的表单元素目前的表单值
           //callback 回调函数
           //callback（）校验成功，如果要失败callback(new Error(错误信息))必须要使用回调函数
           if (value !== formModel.value.password) {
             callback(new Error('两次输入的密码不一致'))
           }
           else {
            callback()//校验成功也需要回调
           }
        },trigger:'blur'}
    ]
}
const register= async ()=>{
    //注册之前先进行校验，校验成功接着执行接下来的
    await form.value.validate()
    await userRegisterService(formModel.value)
    ElMessage.success('注册成功')
    isRegister.value=false
}
watch(isRegister,()=>{
    formModel.value={
        username:'',
        password:'',
        repassword:''
    }
})
const userStore=useUserStore()
const router=useRouter()
const login=async ()=>{
    await form.value.validate()
    const res=await userLoginService(formModel.value)
    userStore.setToken(res.data.token)
    ElMessage.success('登录成功')
    router.push('/')
}
</script>

<template>
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="formModel" :rules="rules">
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input v-model="formModel.username" :prefix-icon="User" placeholder="请输入用户名"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            v-model="formModel.password"
          ></el-input>
        </el-form-item>
        <el-form-item prop="repassword">
          <el-input
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入再次密码"
            v-model="formModel.repassword"
          ></el-input>
        </el-form-item>
        <el-form-item>
          <el-button @click="register" class="button" type="primary" auto-insert-space>
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>
      <el-form ref="form" size="large" autocomplete="off" v-else :model="formModel" :rules="rules">
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="formModel.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            name="password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
            v-model="formModel.password"
          ></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox>记住我</el-checkbox>
            <el-link type="primary" :underline="false">忘记密码？</el-link>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button @click="login" class="button" type="primary" auto-insert-space
            >登录</el-button
          >
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
.login-page {
  height: 100vh;
  background-color: #fff;
  .bg {
    background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
      url('@/assets/login_bg.jpg') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }
  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;
    .title {
      margin: 0 auto;
    }
    .button {
      width: 100%;
    }
    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>